Alarm and releasing attachment tor windows



1..QI LISTON. ALARM AND RELEASING ATTACHMENT FOB W I NDOWS.

Patented June 17, 1919.

' 2 SHEETS-SHEET 1.

APPLICATION FILED NOV. 1 L917- gnwmtoz 11.0 Liston J. C. LISTON.

ALARM AND RELEASING ATTACHMENT FOR WINDOWS.

' APPLICATION FILED NOV. 14. 191;.

1,306,702. Patented June 17, 1919.

2 SHEETSSHEET 2.

w r l QZLQETZmB 3? 3?) ll FIE EJ m UNITED STATES PATENT OFFICE.

JAMES C. LISTON, 0F CHATSWORTH, ILLINOIS.

ALARM AND RELEASING ATTACHMENT FOR WINDOWS.

Specification of Letters Patent. Patented June 17, 1919,

Application filed November 14, 1917. Serial No. 201,969.

To all whom it may concern:

Be it known that I, JAMES C. LISTON, a citizen of the United "States,residing at Chatsworth', in the county of Livingston and StateofIllinois, have invented certain new and useful Improvements in Alarmand Releasing Attachments for Windows, of

which the following is a specification.

, This invention relates to an alarm and releasing attachment forwindows;

The primary obj ectof this invention is to provide an attachment whichmay be readily applied to the window casing or frame and will ring abell should it commence to rain or should a wind come up of sufficientstrength to blow dust into the room.

A further object of this invention is to provide means for automaticallyreleasing the window should either or both-ofthe foregoing conditionsensue, thus safeguarding the interior of the room and its furnishingsagainst injury from rain or dust. With the foregoing and other objectsin view that will appear as the nature of the invention is betterunderstood, the same consists in the novel featuresv of construction,combination and arrangement of parts illustrated in the drawings andmore particularly pointed out in the a pended claim.

In the accompanyingrliawings:- I

Figure 1 is an outside or front elevation, illustrating the applicationof the invention.

Fig.2 is a vertical transverse section taken on the plane indicated bythe dotted lines 22 of Fig. 1, looking in the direction indicated by thearrows.

Fig. 3 is a detail perspective view of the trip member.

Fig. 4c is a side elevation of my improved attachment.

Fig. 5 is a vertical longitudinal section of Fig. 4.

Fig. 6 is a top plan view of the attachment. r,

Fig. 7 is a transverse section, taken on the plane indicated by thedotted line 7-7 of Fig. 4, looking in the direction indicated by thearrows and Fig. 8 is a detail perspective view of the catch releasingmember.

Referring to the drawings for a more par ticular description of theinvention and which drawings are for illustrative purposes only and aretherefore. not drawn to scale, the device comprises a lower rectangularoblong base frame 1 to which is hingedly connected at its inner end, asat 2, the cover 3 which, as shown, is formed with a downwardly andoutwardly inclined top l provided at its front end with a centraltransverse slot 5, the purpose of which will presently appear.

A trip 6 is operativcly mounted in the base frame 1, being carried bythe transverse rock shaft 7, the ends of which shaft are journaled inthe side members 8 of said frame. One end of the trip 6 is provided witha shallow pan or receptacle 9 while the opposite end has suitablyconnected thereto a weight 10 which evenly balances the trip memberunder normal conditions.

A releasing member 11 of right angular form, is pivoted by means of itshorizontal arm 12 in the bearing lugs 13 of the bar 14 secured to theouter face or wall of one of the side pieces of thebase frame. Theupright arm 15 of said releasing member is provided with a weight 16 andis connected at its upper end above said weight by means of a cord 17 orother flexible element, to the arm 18 of a catch 19 secured to thebottom rail 20 of the upper window sash 21.

25. and carried by one end of the rock shaft 7 to which the trip member6 is secured.

A crank shaft 26 is journaled at opposite ends in the side members 27 ofthe top 3, one end of said shaft being formed with an outwardlyextending longitudinally disposed arm28 which normally assumes anapproximately horizontal position and is equipped at its free end withthe wind actuated plate 29.

In practice, should it commence to rain, the water which collects on thetop a of the cover 3 flows through the slot 5 in the former into the panor receptacle 9 of the trip member 6. The trip member 6 being evenlybalanced under normal conditions by the weight 10, it is obvious thatthe added weight of the water which collects in the pan or receptacle 9will cause the outer or free end of said trip member to swing down intothe dotted line position indicated in Fig. 5 of the drawings. Thisoperation causes the rock shaft to turn in its bearings and raise thecrank arm 24, which, through its action on the upright arm or extension22 of the releasing member 11, causes the latter to swing down or awayfrom the base frame, thereby exerting a pull on the cord or otherflexible element 17 and thus disengaging the catch 19 from the adjacentmember of the window frame or casing, leaving the sash 21 free to slidedown or descend by its own weight into closed position.

Should a heavy wind come up of sufiieient force to blow dust or otherdebris into the room, the action of the Wind on the wind plate 29 willraise the arm 28 of the crank shaft 20 into vertical position, asindicated by the dotted lines in Figs. 4 and 5, during which movement ofthe arm 28, the crank 30 of said crank shaft will impinge or strike thetrip member 6 and thereby trip the same, which will have the same actionon the releasing member 11 above described and provide for thedisengagement of the catch 19 with the window frame.

Attention is also invited to the fact that when the arm 28 of the crankshaft 26 is swung into vertical position, the crank arm 31 on theopposite end of the crank shaft comes in contact. with and depresses thebutton 32 of the bell 33, thereby causing tl1e bell to ring continuouslyuntil the above described contact or engagement is broken by the personwho hears the alarm.

From the foregoing description taken in connection with the drawings, itis thought that the construction, operation and advan tages of thisinvention will be readily understood without requiring a more extendedexplanation.

Various changes in the form, proportions and minor details ofconstruction may be resorted to without departing from the prin ciplesor sacrificing any of the advantages of this invention as defined in theappended claim Having described my invention, what I claim as new anddesire to secure by Letters Patent, is

An attaelunent for windows, comprising a supporting frame adapted to bemounted in the window 'asing, acover for said frame, said cover having adownwardly inclined top provided at a suitable point with a transverseslot. a window catch releasing member hinged to said frame and acounter,- balanced trip member provided at one end with a waterreceptacle and adapted to give impetus to the releasing member when oneend of said trip member is depressed by the added water of the waterflowing through the slot of the cover into said receptacle.

In testimon whereof I aflix my signature in the presence of twowitnesses.

J AMES C. LISTON.

\Vitnesses:

JOHN M. FISCHER, CHAS. F. SI-IAFER.

